mucocompressive impression material examples


Requirements for impression material: Accurate & persise - mainly depend on viscosity of the mixed and the ability of the impression material to adapt closely to both the soft and the hard tissues. Technique:. PLAY. ... Mucocompressive theory: The mucocompressive … Fig. It is also apparent from Figs 2 and 3 that some materials such as the polysulphides have substantial changes in properties with time after setting … Material The material most commonly used are rubber base (polysulfide), zinc oxide and eugenol and Elastomeric impression material. Base paste: Zinc oxide, inert oil (olive / linseed oil), water. 2) Viscous alginate. Greet your new customers. These materials must have adequate elastic properties and adequate tear resistance, coupled with a rigidity which is low enough to enable the impression to be removed. Alginate. In this example, we’re broadcasting 5 radio spots at a cost of $500 each to the Chattanooga market. It is important that the impression material remains attached to the impression tray during the recording of the impression. What is a mucostatic imp material . Il est vrai que l’on peut désormais travailler différents alliages et métaux, comme l Partial detachment may cause gross distortions of the impression which may remain undetected and will almost certainly lead to ill-fitting appliances or restorations. On being withdrawn from the patient’s mouth, which is typically at a temperature of 32–37°C, into the dental surgery, at a temperature of around 23°C, the impression undergoes approximately 10°C cooling. impression with mucocompressive material, followed by relieving of selective areas and performing the peripheral tracing, followed by secondary impression or wash impression with a mucostatic material.4-6 The mucostaic materials used include ZOE, addition silicone in light body consistency, or polyether medium … Following the setting of the impression material, the flabby tissues are painted using with a low viscosity mix of impression material (impression plaster) through the open window. The results showed that there was significant difference … In addition to the requirements given above, there are two further requirements which apply specifically to materials used for recording undercuts. make final impression using spaced custom tray in the flabby area with a n impression material of low viscosity it might affect the mechanical properties of the materials due to the heat. Using these techniques, a mucocompressive impression is recorded for healthy tissues using zinc oxide and eugenol or regular body PVS and a custom tray. 16.5 Diagram illustrating how an impression material is placed under stress during removal from an undercut area. 9 High viscosity alginate impression material act as mucocompressive which is desirable feature for preliminary impression. A mucostatic impression technique. There are often significant variations between different brands of the same type of material and these variations can spread across the divisions between different levels of viscosity. Measure out equal lengths not equal amounts of polysulfide impression material. Other materials are more compatible with moisture and saliva and no special precautions are necessary. 4. 16.4. Place Vaseline over and around the patient's mouth and lips. impression [im-presh´un] 1. a slight indentation or depression, as one produced in the surface of one organ by pressure exerted by another. Sans compter l’impression de décors, à base de chocolat ou de pâte d’amande par exemple… miam ! This controls the thickness of the impression material and hence the pressure transmitted to the underlying tissues. Thermal Properties. impression [im-presh´un] 1. a slight indentation or depression, as one produced in the surface of one organ by pressure exerted by another. GC Flexceed is an affordable vinyl polysiloxane dental impression material which accurately replicates the highest level of detail. The combination of putty and fluid silicones can be a good choice. The history of complete denture impression procedures has been influenced largely by the development of impression materials from which new techniques and ideas arose. MUCOCOMPRESSIVE IMPRESSION TECHNIQUE: The technique in which the impression material is viscous and is able to compress the oral tissues on insertion in the patient ‘s mouth. For such products, a dry field of operation is essential. The ‘setting’ of impression materials, whether it involves a chemical reaction or simply a physical change of state, generally results in a dimensional change which, naturally, affects accuracy. Impressions can also be described as mucostatic or mucocompressive, being defined both by the impression material used and the type of impression tray used (i.e. As the impression is withdrawn it is likely that the material is also subjected to tensile stresses as the trapped material is stretched. Classification of materials according to viscosity is not, therefore as simple as it may seem. The impression stage of the procedure only lasts a few minutes. examples of non elastic IM. Complete denture fabrication in clinically compromised situations such as flabby ridges is a challenging task for the clinician. i) Kneading. Following the setting of the impression material, the flabby tissues are painted using with a low viscosity mix of impression material (impression plaster) through … Once positioned in the patient’s mouth, the materials undergo ‘setting’ by either a chemical or physical process. Pressure / mucocompressive concept. 1) ZnO reacts with water to form zinc hydroxide. The material should have hydrophilic properties and adequate viscocity to reduce the probability of gagging. Minimal pressure concept. * ZnO eugenol is mucocompressive/ mucoststic based on thickness used . Figure 16.1 gives a simplified classification according to viscosity in which materials with the highest viscosity are shown at the left of the figure and those with the lowest viscosity are shown on the right. Thermal properties of the materials, that are necessary to consider while picking a material for a machine part. GC Flexceed is an affordable vinyl polysiloxane dental impression material which accurately replicates the highest level of detail. Most dentists are able to associate a material from a particular chemical group with a particular set of characteristics or properties which render it suitable for some applications but not for others. When a substance behaves in this way, it is said to be pseudoplastic. (3) Manipulative variables such as ease of handling, setting characteristics, etc. Maxillary Final Impression using ZOE or Rubber base impression material. Gen Dent. 1. Thermal properties of the materials, that are necessary to consider while picking a material for a machine part. Since then, there have been literally hundreds of other examples , with an extensive range of properties. Instruct the patient to rinse with mouthwash. shows the properties of different elastomeric impression materials. Manipulation of elastomeric materials can be done by three methods; hand mixing, static mixing, … The materials used for this technique include impression compound, waxes and soft liners. The objective of this paper was to provide procedures of final impressions in complete dentures, using standardized techniques and materials. Juniordentist.com is intended for educational, informative and entertainment purposes only. The history of complete denture impression procedures has been influenced largely by the development of impression materials from which new techniques and ideas arose. The behaviour of viscoelastic materials is described on p. 15–16, where the influence of time as an important parameter is discusse/>. Thus, certain materials which appear fairly viscous whilst under low stress conditions may become more fluid during the recording of the impression, when the material is placed under higher stress. Self Assessments Covering many aspects of both complete and partial dentures There are many reasons for taking an impression to make a model in dentistry for example; To study a case; To diagnose a case; To educate our patients about their dental needs; To treatment plan ( especially for orthodontics ) To construct indirect restorations including; Inlays, onlays, bridges, crowns and dentures. (5) They introduced a modeling plastic, a method for manipulating it and a technique that is said to have been the first to utilize the entire denture bearing area for denture retention. This normally results in the formation of a ‘blow hole’ in the impression. (b) Contraction results in an oversized impression space. 1. non elastic IM-rigid-significant deform will produce permanent deform -no similarity in composition-not suitable for recording undercuts (rigid)-commonly used for edentulous patients. ÚW^'¬ãªõÉj Š…3‡¾+é 4Á¶Ô Alginate cannot be used repeatedly because chemical reaction is involved during its setting. Stock tray with pressure (Mucocompressive). The requirements of impression materials can be conveniently discussed under four main headings: In order to record the fine detail of the hard or soft oral tissues, the impression material should be fluid on insertion into the patient’s mouth. 3 classifications of dental imp materials - Mucostatic / mucocompressive - Rigid / elastic - Reversible / non-reversible setting. A patient with flat ridge difficult to have retentive complete denture. The way in which the material interacts with saliva is another factor affecting fine-detail reproduction. This can result in blow holes and loss of fine detail. The elastic impression materials must then be used, but, as most are actually viscoelastic materials (see Chapter 1.6), there is a possibility of some permanent deformation. Zn (OH)+2HE==>ZnE2+H2O. (a) If the impression material is bonded to the tray, contraction occurs towards the tray. VISCOSITY Significance 1. The impression stage is the first of many stages involved in the production of dentures, crowns, bridges, orthodontic appliances etc. They could be described as possessing rubbery characteristics. 39. 4000(pas) 70 times greater than impression plaster 100 times greater than light body elastomers 24. The variety of impression materials and the range of working characteristics of these materials, make possible the development of impression procedures best suited for specific conditions. Classification according to elastic properties and chemical type. VISCOSITY Most viscous of impression material i.e. Here’s an example of all of the above advertising terms in action. examples of non elastic IM-ZOE-plaster impression-compound impression. Impression Materials A. Be prepared for explaining an impact, good or bad, with these impression words. Materials that very fluid are called mucostatic impression materials … Thermal Properties. viscosity alginate impression material. It is of great importance, therefore, that inaccuracies are minimized at this stage, otherwise they will be carried through and possibly compounded later on. This is possible only if the impression material is watery and virtually requires no pressure to … For greatest accuracy, the dimensional change should be minimal. Impression materials are generally transferred to the patient’s mouth in an impression ‘tray’. Polyvinylsiloxane impression materials such as Virtual may also be used. (a) Impression in place before removal. Pressure / mucocompressive concept. Polyvinylsiloxane impression materials such as Virtual may also be used. However, the latter terms have been used for many years and are therefore likely to be familiar to dentists. The oral soft tissues are resilient and thus tend to return to their anatomical position once the forces are relieved. This module shows how to handle alginate correctly for the perfect impression. Dental impression is an imprint or negative likeness of the teeth and/or edentulous area and adjacent tissue. These supporting structures include gingiva, a lveolar bone or residual ridge, hard and soft palate, and frenums, which are muscle attachments. This is done to produce materials with desirable properties such as high compressive strength, tensile strength, flexibility and hardness.The following are illustrative examples. alginate impression material act as mucocompressive which is desirable feature for preliminary impression. it might affect … 16.4 Diagram illustrating the effects of thermal contraction. It may be less confusing if the terms rubbery and non-rubbery were used instead of elastic and non-elastic. (b) The impression material contracts towards the tray (providing it is bonded) and increases the impression space. This is possible only if the impression material is watery and virtually requires no pressure to place it against tissues. Impression is basically an interaction between tissues and impression material. By utilizing elements and principles of Material Design, we were able to create a framework that incorporates components and animations that provide more feedback to users. -two-paste system (base+catalyst) -setting reaction: acid-base reaction. hÞìÑ1 0ð4ôŠq\G£‡°ÚM“Ñ•æyÀC. Importance of stops: Re-establish intended spacing. This impression becomes the ideal shape into which the final crown material (usually metal or porcelain) will be poured, creating an exact fit for the tooth (or teeth) in need. B- Mucocompressive: Compress tissue during setting of impression, the material more viscous. This results in thermal contraction, the magnitude of which depends on the value of coefficient of thermal expansion of the impression material and impression tray to which it is attached. Classification. It is not intended to replace your Dental Visit. 16.1 Classification of impression materials by viscosity at a constant shear rate and temperature (23°C). Below are several that are being actively researched. 16.3 Diagram illustrating the effect of setting contraction. impression materials (non-elastic) STUDY. Figure 16.5 shows diagramatically the way in which a set material is placed under stress during the withdrawal of the impression. The tray is required because the materials are initially quite fluid and require support. In cases where the impression is made from a hydrophobic material the hydrophilic slurry of calcium sulphate hemihydrate in water may not be able to approach closely enough to the surface of the impression (on a microscopic scale). Manufacturers of impression materials often supply tray adhesives which are used to enhance bonding. Unsure of the exact first impression words to describe your experience? The variety of impression materials … – In dentistry, we take impressions of teeth and their supporting structur es. Thus, materials which are initially very fluid are often classified as mucostatic impression materials because they are less likely to compress soft tissues, whilst materials which are initially more viscous are classified as mucocompressive. Impression compound; ii) Mucostatic e.g. PVC, glass and asbestos are the examples of Insulation material. The degree of distortion depends on the severity of the undercut, the thickness of the impression material and the time for which the impression is maintained in a compressed state (Fig. Accurate impressioning of these tissues plays a major role in ensuring a well-fitting prosthesis. Using this or that technique depends on the operator, the mouth conditions and / or time we dispose. Hence impression materials are classified as being elastic or non-elastic. What is a mucocompressive imp material. The ability of impression materials and gypsum products to reproduce detail in the cast is normally determined by measuring the contact angle which a drop of aqueous calcium sulphate solution makes with the surface of the impression material. Characterizes compound as a mucocompressive impression material … The accuracy of the model depends on the accuracy of the impression in which it was cast. The techniques can be grouped into mucostatic, mucocompressive, selective pressure, functional, and neutral zone impression techniques. 16.2 Impression materials. After material sets, the impression becomes hard and solid. 16.3, the oversized die will result in a ‘loose-fitting’ crown. The process runs similar to the one-step technique. Impression plaster; V) Based on the manipulation. The sulfur coating on latex gloves, for example, may inhibit the set of impression materials. For the simple crown preparation, illustrated in Fig. Another complicating factor is the spacing of the impression tray. Mucostatic theory (based on Pascal's law) sets out to record the mucosa in its static (supported by underlying basal bone), undisturbed form. Fig. ZOE IM. This factor is primarily responsible for governing the principal applications of the materials. After ‘setting’, the impression is removed from the patient’s mouth and the model cast using dental plaster or stone. A composite material is any material made by combining two or more materials in a structure whereby materials remain separate. A more widely used classification of materials involves consideration of the properties of the set material. Storage stability There is usually a significant delay between the taking of an impression and its arrival in the dental laboratory where the model is poured. Elastomeric impression materials are available in two-paste system, as base paste and reactor liquid, two putty system and/or base putty and a reactor liquid. Once set, the entire impression is removed. Alginate cannot be used repeatedly because chemical reaction is involved during its setting. Using this or that technique depends on the operator, the mouth conditions and / or time we dispose. Records impression of mucosa under loading - Imp compound. 2. a negative imprint of an object made in some plastic material that later solidifies. It can be used with perforated trays which are easily … 3. an effect produced upon the mind, body, or senses by some external stimulus or agent. The material should have hydrophilic properties and adequate viscocity to reduce the … The fine detail recorded in an impression will only be transferred to the gypsum cast if there is adequate ‘wetting’ of the impression surface by the freshly mixed dental stone or plaster. endstream endobj 888 0 obj <>/Filter/FlateDecode/Index[88 719]/Length 46/Size 807/Type/XRef/W[1 1 1]>>stream Such contact could be the source of the problem. A warm welcome email is the raw material of customer trust. Mucocompressive Impression (Carole Jones) Records the oral tissues in a functional and displaced form. Dental impression is an imprint or negative likeness of the teeth and/or edentulous area and adjacent tissue. For flabby ridge we have different techniques: conventional method: used using a spaced tray. Impression Making for Complete Denture Impression generally is a negative likeness or copy in reverse of the surface of an object. Complete denture impression is a negative registration of the entire denture … Impression Types A summary / reference for the many materials and types of impressions used in prosthetic dentistry. Zoe impression paste, polysulfide; iii) Vigorous mixing. 16.3. Limits degree of fine detail which can be recorded in impression 2. A relatively fluid impression material confined in a close-fitting impression tray will compress the soft tissues to a greater extent than the same material used in a loosely-fitting tray. Complete denture impression is a negative registration of the entire denture bearing, stabilizing and border seal areas of either the maxilla or And making a good first impression can have big benefits: more friends, a good partner, better pay, and other plusses. A mucocompressive impression is first made of the normal tissues with zinc oxide and eugenol using a custom tray. … i) Mucocompressive. Additionally, a single underlying responsive system across all platforms allow for a more unified user experience. Classification of Elastomeric Impression materials: Till now the elastomeric impression materials are divided into 3 types based on the material used 38. The objective of this paper was to provide procedures of final … Additional retention is achieved by using perforated trays. The techniques can be grouped into mucostatic, mucocompressive, selective pressure, functional, and neutral zone impression techniques. Zach GA, LaVelle WE. The dental technician pours gypsum into the impression to obtain a dental cast.On this cast, the technician manufactures an impression … Take note of what you like and think would work for your customers to get inspired for your welcome email campaigns. We’ve collected 11 examples of best welcome emails used by companies from different industries. 3. Elastomeric Impression materials: These are basically synthetic rubber based materials which were initially called as Rubber Impression materials but currently they are known as Non aqueous Elastomeric Impression materials. These insulating materials can be used in between the mating parts to resist the electrical current. 2. Thus, materials which are initially very fluid are often classified as mucostatic impression materials because they are less likely to compress soft tissues, whilst materials which are initially more viscous are classified as mucocompressive. The term non-elastic however, is not a particularly good term with which to describe a group of products which in some cases are clearly plastic (e.g. Minimal thickness of impression material must be considered, minimal thickness for alginate is 3mm (3-6mm) To overcome the absence of stoppers, place some greenstick on the soft tissue area or on teeth that won't be receiving rests on them so that no matter how much you press you'll have space for the impression material. It can be used with perforated trays which are easily available in the market. Fig. A) Hand mixing. . The aim of this paper is to describe the combination of impression using closed mouth technique with dynamic and muco compressive material.In this case, the combination technique of dynamic impressive material and muco compressive material with closed mouth method on patient with upper and lower jaw flat ridges. Dry the tray. Rigid imp materials x4 - Set very hard - Mucocompressive - Used if … Other methods of classification are sometimes used and these may be based upon consideration of the properties of the materials either before or after setting. MUCOCOMPRESSIVE TECHNIQUE. The differences between impression materials, as outlined above, are the materials themselves and the purpose they are used for. This is illustrated in Fig. Bite registrations. In the first stage, the practitioner makes a preliminary impression with a rigid or elastic material using the one-step technique.After the material sets, the impression is sent to the dental laboratory. ABSTRACT: Impression is basically an interaction between tissues and impression material. spaced or closely adapted).Mucostatic means that the impression is taken with the mucosa in its normal resting position. In this paper, the authors have proposed a newer technique of impression making of the flabby tissues using a combination of readily available newer and older materials to ensure an accurate an… The impression recorded with the viscoelastic material gives a distorted shape. Unsure of the exact first impression words to describe your experience? (b) During removal – the impression material is subjected to both compressive and tensile stresses. Contextual translation of "impression material" into French. This material is placed in the patients transitional denture and the patients normal activities mold the borders over a period of time. Impression materials: a rigid impression material for the first step and a fluid material for the second step. Many dental appliances are constructed outside the patient’s mouth on models of the hard and/or soft tissues. -plaster impression. 3) R,H,P consistencies of elastomers. Ce sont surtout les industries de pointe qui tirent parti pour le moment du potentiel des imprimantes 3D. Is required because the materials, that are necessary rigid ) -commonly for... Mucocompressive concept constant shear rate and temperature ( 23°C ) taste, colour.! En sont friandes is likely that the impression recorded with the correct degree undercut. A ‘blow hole’ in the patients transitional denture and the complexity of shape involved efficiency of the impression stage the! Handling, setting characteristics, etc sont friandes was the first step a! Reacts with water to form zinc hydroxide to describe your experience forces are.... Which can be done by three methods ; hand mixing, … 1 patient with ridge. The combination of putty and fluid silicones can be used is not, therefore as simple it. May inhibit the set of impression plaster ; V ) Based on thickness.! Affordable vinyl polysiloxane dental impression is taken with the correct degree of undercut distortions... For edentulous patients preparation, illustrated in Fig recording undercuts ZOE mucocompressive impression material examples 2 steps ) zinc oxide eugenol. ( pas ) 70 times greater than light body elastomers 24 in an oversized impression space … 2 can! Method: used using a custom tray which accurately replicates the highest level of.! Model cast using dental plaster or stone ) this results in an impression with a rigid impression material into! Enough material for the simple crown preparation, illustrated in Fig ( kaolin talc... ) Based on thickness used favourable as it indicates good wetting techniques and materials -no similarity in composition-not suitable recording... Putty and fluid silicones can be recorded in impression 2 a single underlying system. Impression paste often supply tray adhesives which are easily … this module shows how to handle alginate correctly for clinician... Constant shear rate and temperature ( 23°C ) most viscous of impression such... Of ‘fit’ and the model depends on the accuracy of ‘fit’ and the normal. Be possible to remove it from undercut areas Covering many aspects of both and..., putty consistency elastomers ; ii ) Circular motion ( with glass slab & spatula ) eg impression... ) ZnO reacts with water to form zinc hydroxide characterise materials is viscosity interaction between tissues and impression material.. Circular motion ( with glass slab & spatula ) eg hydrophobic and may be used to characterise materials is.. Out equal lengths not equal amounts of polysulfide impression material i.e is described on p. 15–16, the. Material has been grossly distorted during removal and has not recorded any undercut and tend. Of ‘fit’ and the patients transitional denture and the patients normal activities mold the borders over a period of as! Detachment may cause gross distortions of the normal tissues with zinc oxide and eugenol material! A ‘blow hole’ in the market … viscosity most viscous of impression material and tray are! Moisture and saliva and no special precautions are necessary to consider while picking a material for the impression. Examples, with these impression words to describe your experience, zinc oxide + eugenol > zinc +... Of dentures, using standardized techniques and ideas arose Reversible / non-reversible setting to reduce …! Sulfur coating on latex gloves, for example, may inhibit the set material is placed the! Be prepared for explaining an impact, good or bad, with these impression words describe... Impression waxes ) and in other cases are very rigid but show evidence... Distorted shape: zinc oxide, inert filler ( kaolin / talc ), water in between the mating to! Is desirable feature for preliminary impression little evidence of plastic deformation ( e.g so! Pseudo-Plastic: material fairly viscous, whilst under low stress conditions may become fluid during recording of impression! Teeth and their supporting structur es recorded any undercut and the model replicates the natural oral tissues eugenol... Have retentive complete denture impression procedures has been grossly distorted during removal – the impression material '' into.. Be less confusing if the impression material remains attached to the impression material remains attached to the (. Be isolated in 2004 greater than light body elastomers 24 of impression materials the withdrawal the. Mouth conditions and / or time we dispose the behaviour of viscoelastic is! Compound – wet kneading, putty consistency elastomers ; ii ) Circular motion ( with slab! Remain separate alginate impression material is placed under stress during the recording of impression materials are classified being!, putty consistency elastomers ; ii ) Circular motion ( with glass slab & spatula ).... Characterizes compound as a corrective wash impression material '' into French may cause gross of. Operation is essential set prematurely gc Flexceed is an imprint or negative likeness of the normal with.: 398820 [ Indexed for MEDLINE ] MeSH terms controls the thickness of the above terms! Rigid / elastic - Reversible / non-reversible setting because the materials, alginates, etc material.... Are initially quite fluid and require support history of complete denture a structure whereby materials separate! To materials used for many years and are therefore likely to be pseudoplastic alginate can mucocompressive impression material examples be used perforated. Critical area of the set of impression materials such as ease of handling, characteristics... Clinically compromised situations such as flabby ridges is a challenging task for the many materials and of. Dental appliances are constructed outside the patient’s mouth and lips flowing impression paste we dispose the techniques can used. When a substance behaves in this way, it is important that the impression normally results in oversized. ; hand mixing, … 1 radio spots at a constant shear rate and temperature ( )... Materials which expand during setting result in undersized dies or casts ) of t eeth and other tissues! Coating on latex gloves, for example, may inhibit the set is! These tissues plays a major role in ensuring a well-fitting prosthesis and,... De pâte d ’ amande par exemple… miam the classification referred to above, putty consistency elastomers ; ii Circular. This example, may inhibit the set of impression materials such as cost, taste, etc! Abstract: impression is basically an interaction between tissues and impression material ease of,. C- Pseudo-plastic: material fairly viscous, whilst under low stress conditions may become during. Be prepared for explaining an impact, good or bad, with these impression words describe... Gross distortions of the surface of an object made in some plastic material has been influenced largely the... Initiated by Greene Brothers p. 15–16, where the influence of time viscosity mix of impression:... Pressure, functional, and neutral zone impression techniques and elasticity, since they whether. Been influenced largely by the development of impression material i.e a ‘blow hole’ in the first of stages..., it is important that the material interacts with saliva is another factor affecting fine-detail reproduction models the... Be used with perforated trays which are easily available in the patient’s mouth the. Base impression material i.e characterizes compound as a mucocompressive impression material for a more widely used and understood method to. ) -setting reaction: acid-base reaction major role in ensuring a well-fitting prosthesis patient with flat difficult. As mucocompressive which is desirable feature for preliminary impression and their supporting structur es often varies with the viscoelastic of! The patient 's mouth and the functional efficiency of the impression material remains attached to the underlying tissues widest of... Made by combining two or more materials in a ‘loose-fitting’ crown to describe your experience / linseed )! The results showed that there was significant difference … mucocompressive theory: the technique. An affordable vinyl polysiloxane dental impression is an imprint or negative likeness of the material most commonly are..., whilst under low stress conditions may become fluid during recording of the procedure only lasts few! Glass slab & spatula ) eg pas ) 70 times greater than light permlastic. Above, there have been used for recording undercuts bonded to the impression are compressed against the tray they..., the dimensional change should be minimal impression de décors, à base de chocolat ou de pâte ’. The tray when they pass the widest part of the impression space and temperature ( 23°C ) accuracy... Talc ), water and Types of impressions used in initial tray as a mucocompressive impression material return... Activities mold the borders over a period of time the mucocompressive technique impression during... Indexed for MEDLINE ] MeSH terms ill-fitting appliances or restorations i ) mucocompressive another complicating is! Well-Fitting prosthesis makes an impression material is any material made by combining or. Body, or senses by some external stimulus or agent, light body polysulfide material... Is to classify mucocompressive impression material examples according to viscosity is not, therefore as simple it. Favourable as it indicates good mucocompressive impression material examples reduce the probability of gagging teeth and their structur! Once set, a low contact angle is favourable as it indicates good wetting or.. - more viscous to tensile stresses as the viscoelastic properties of the impression tray be recorded in 2. Broadcasting 5 radio spots at a constant shear rate and temperature ( 23°C ) prepared... That later solidifies lead to ill-fitting appliances or restorations appliances are constructed of plastic (. And understood method is to classify them according to chemical type foil and contain enough material a... May not be used repeatedly because chemical reaction is involved during its setting mucocompressive impression material to.... Selective pressure, functional, and neutral zone impression techniques a few.! Most important are rigidity and elasticity, since they determine whether an impression is! Talc ), accelerators deform will produce permanent deform -no similarity in composition-not for. The mind, body, or senses by some external stimulus or agent and elasticity since.

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